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GrimmSpeed Phenolic Thermal Spacer 8mm - Subaru N/A Models (inc. 1999-2008 Impreza / 2000-2006 Legacy)
GrimmSpeed Phenolic Thermal Spacer 8mm - Subaru N/A Models (inc. 1999-2008 Impreza / 2000-2006 Legacy)
GrimmSpeed Phenolic Thermal Spacer 8mm - Subaru N/A Models (inc. 1999-2008 Impreza / 2000-2006 Legacy)
GrimmSpeed Phenolic Thermal Spacer 8mm - Subaru N/A Models (inc. 1999-2008 Impreza / 2000-2006 Legacy)

GrimmSpeed Phenolic Thermal Spacer 8mm

Subaru N/A Models (inc. 1999-2008 Impreza / 2000-2006 Legacy)

$79.00

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Features & Product Details

RallySport Direct proudly carries quality aftermarket performance enhancements and solutions brought to you by GrimmSpeed. 

 

These are the GrimmSpeed Phenolic Thermal Spacers. These thermal spacers have been designed to absorb the heat that generates between the intake manifold and the engine block. When running the factory gaskets only, the intake manifold can get very hot to the touch, and that unnecessary internal heat gets cycled back through the engine leaving much room for improvement. GrimmSpeed has come up with a great solution by creating a set of phenolic spacers that are available in a variety of thicknesses to absorb that heat to drastically reduce the transfer of heat from the engine block to the intake manifold. The result is a 1% increase in horsepower for every 5 degrees of heat reduction.

 

 

 

DETAILS:

  • 8mm in thickness
  • Designed to absorb the heat from the engine and the intake manifold
  • Reduces heat soak
  • Super durable phenolic material construction 
  • Creates cooler and denser air which increases the amount of air that mixes with the fuel which improves the overall efficiency
  • Every 5 degrees in temperature drop will increase the horsepower by 1%
  • Direct bolt-on installation
  • Can withstand operating temperatures past 500°F
  • Capable of conducting 300-900 times less heat when compared to the steel intake manifold gaskets
  • Sold as a pair
  • Includes longer bolts due to compensating for the ticker phenolic spacers
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    NOTE:

  • It is recommended to use (2) sets of intake manifold gaskets on each side of the spacers (sold separately)
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    Specifications

    Brand: GrimmSpeed
    Installation Hardware Included: Yes
    Material: Composite
    Thickness: 8.0mm
    Mfgr. Warranty: Lifetime
    Condition: New Product
    Return Policy:
    Standard

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    REVIEWS & CUSTOMER MEDIA

    3 Reviews
    5 out of 5 Stars
    5 Stars
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    No user media. You can upload a photo or video of your install by posting a review.
    New Parts 8 years ago
    5out of 5stars
    2.5RSBoxer
    I have not installed the product to put a review on it, but I can say that the waiting period is always outstanding in comparison to other vendors.
      
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    Improvment in low end most significant 9 years ago
    5out of 5stars
    shredrmk34238
    Installed on EJ251 & 3 - A+ product, just a butt dyno but both my son & I feel bottom end improved throttle response below 3k rpm. We both have header, intake & pulley. There are not many bolt on upgrades for the NA but I'd say here's one that's worth it.
      
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    threw this in with a cheep cold air intake 9 years ago
    5out of 5stars
    Chevy.man.mikey195539344
    wicked product combined with a ebay ghetto cold air intake and pulled a extra 30Hp... let the beast breath oh yeah got more stickers to 5HP per sticker lol
      
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    QUESTIONS & ANSWERS

    • Q: Compatible with the 09 2.5i Impreza?  joshuamnr9 years ago

      Will this work with the 09 2.5i Impreza? My understanding is the 08 and 09 are very similar?
    • Q: Compatible  StiRaV211 years ago

      Are these compatible with older models? 1995 STI Ra V2 JDM? GC8 chassy code?
      • 0 of 0 people found the following answer helpful

        A:  We're not entirely familiar with those motors. For the best answer i would email us a picture of your head profile or intake manifold gasket to [email protected] From there we should be able to tell you if they will work! Mike

        GrimmSpeed
          
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      • 0 of 0 people found the following answer helpful

        A:  We are unable to confirm fitment with non-USDM vehicles because Grimmspeed does not test them on JDM models.

        Zach G. @ RallySport Direct 11 years ago  
          
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    • Q: 07 Install  Mustardman11 years ago

      I read that install on 05+ n/a Impreza's is not direct bolt on. Apparently the 8mm spacers prevents the EGR tube from being able to connect properly. Can you confirm this at all?
      • 0 of 0 people found the following answer helpful

        A:  That is correct. With any Subaru that has EGR you will need to remove or modify the EGR tube that connects the head to the EGR valve.

        Zach G. @ RallySport Direct 11 years ago  
          
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